Car-truck.



T. JOHNSON.

J. C. WHITRIDGB & G.

CAR TRUCK. APPLmATIoN NLLD AUG. s, w13,

Patented Nov. 18, 1913,

3 SHRETS'IBET 1.

. G. WHTRIDGE in G. T. JLJHNSON.

GAR TRUCK. APPLECMWON Hmm AUG. a, ma

J. G. WHITRDGB & G. T. JOHNSON.

GAR TRUCK. APPLIOATION FILED AUG. 8, 1913 3 SHBETSWSHBET 3.

Patented Nov. 18, 1913.

UNITED STATES PATENT OFFICE.

JOHN C. WHITBIDGE ANI) GEORGE T. JOHNSON; OF COLUMBUS, 01H0, ASSIGNGRS 'ICJ THE BUCKEYE STEEL CASTINGS COMPANY, 0F COLUMBUS OHIO, A CQBPORATIN.

Specicaton oxetters P2. ten?.

Patented Nov. 1 8, 1913.

Appllaetion filed August 3, i913, Serial No. 783.833.

To all whom, it m an' coi/Cem y Be it known tlnit wel Jenn C. 'Wm'tmnen and (leonor. T` donnees, el Ullnmbns, n: l the conntv of Franklin and State of *il Je, have invented pertain new enel useful lfmj proveniente" in (lm'flrnclisg anti we do llereis specially designed to Gerry, ever a f l stretch of track then the ense with four Wheel trucks, time making it prnetict-'tl to carry unusually heavy loads, irrmh greater than is now time general pref nce, without requiring exteneive imprmements in 'Amelie and bridges.

It is Well known thai lo Perry n load which is concentrated over n elif/*rt area ei length of track, a stronger and limone ex pensive track or s:ibconstruetnm, is nee sary than if the load were distributed ove. t a greater area or length of track. It is also l well known that it is eeonomienl to carry ns much of certain kinds of freight in one vehicle as possible7 and it :is om' :lim to accomplish both results in tne simplest :1ndlnost inexpensive wny by evenly distribnting the load of the enr over n, greater length of track.

Our invention therefore consists in a truck side frame eomi'losed of three equal izing members, each having an axle box, and each end member being partly snp portedl by and flexibly connected Winh the central member. I

Our invention further consists in the parts and cmnbintion of perte will be more fully explained and pointed ont in the claims.

In the accompanying drawings, Figure Il is a view in side elevation of the truck; Fig. 2 is n view in plan of the saine; Fig. 3 is a side view 'of one end men'xber; Fig. 4 is av top plan of the same; Fig. 5 is a` side view of the central member; Fig. 6 is n top p lan of the same, and Figs. 7 and 8 are in side elevation and pien respew tively of modified ffmn.

'l and are the emi members, enen of 'which is formed with, or constructed to eer-ry :i journal bei; l@ for lbe end axles of the trunk. "Vliet-e )unreal boites may be frei with the members 1 :ind i! of side tin-nim or the letter may be pre vieefl with any of llos well known conerntr lions etingltml to receive axle boxes.

Fletch end nefnlM-r l and is provide-ei with n spring my enti housing end with en i: 52 flater being provided n e bearing These frills itn free enf or exiensions 3 of the members; l, and Q, are Il. no? in line with the minis winch muy tbe lnnrnal boxes are prefeinbly Uilen. se ne to permit inem to extend xeral-lvl and nlmi ne of `@non other nein in (lfiig The slimmer farms tivo members .l and in me pinne, while in ated, tbe longer arms are lor'nteil et lmp-mit? siles of :i'vertical plane .tmliy tiirmagll the slmrter :ziens r the nneinberves vlmrly shown in Fig. l. The wins 5 el? the members 'l sind 2 neeti :not ne lv ne nll'wft "bowzn the extended i oi one muy be lgifnrcated to perznllthe xtendfni :worin nl ille other to pass through the bilfnreetioll and engage the fer end of ille nlrel eqnlizing inem ber 3, es; shown in l Y unJl El., and suoli other vlinnges ne inf-Ly be rzevesezwy er nllvis able to nceommflnlni this 'wfnstrnf'lnm.

The eenml memwr il is prnvilleal eentrnlly with. n. journal box. fl, anti :it its ends, et Opposite sules fri the journal bon7 with the bearings 3 on wliiffli the end bearings L of the enti members 1 ajnl rest. This eenlral member 3 is also provided at eneli enfl with the upwardly projecting parallel ears 3, between which tbe' bearingl ends 5** of the end members l and 2 rest, and these eure 3 are each provided with a hole for the passage of e pin or bolt whieh passes through sail holes` and through ibe elongated holes 5b in the end bearings 5a of the members l and This articular con struction with parallel, ears is not. essential,A :is the parallel ears may be on the end meinber-S instead ofen the Central member, or any other suitable or eqnivnlent construction may be used. The two arms of the central member 3, are located out of line as g shown in Fig, 6, so that one arm will rest in the vertical plane ef the longer arm of member 1 and the other in the vertical plane of the longer arm ot1 the other meml ber 2. If however the longer arm o' one i end member l or 2, of the side frame should be bifurcated to receive the longer arm of the other end member as shown in Figs. 7 and 8, the two arms of the central member' would under such condition he in alinement with each other.

The central member 3 is located between and in line with the two end members l and 2 with the longer arms 5 ot cach end member passing over the central member 3 and secured thereto by a pin or bolt', which lock the three members together and prevent them from becoming relatively distri-ranged in the event of a derailmcnt, By this arrangement the several members of each side frame are flexibly connected so that each is tree to rock, and will rock or swing' to accommodate the truck to inequalities in the track. Each end member extends across the center member and bears on the latter adjacent its ends, so that part or" the load on each end member 1 and 2 is transferred to the central member 3.

Each member of the side frame has a journal box for an axle, and each end member is provided with a spring housing in which the springs 6 are located. These springs carry the cross members or bolsters 7, which latter pass from one side frame to the other in the Well known manner, and the two holsters thus supported carry the center plate 8, which is secured at its ends centrally to the two bol-Y sters. The two bolstcrs 7 are also connected outside of the side frames by the side bearing members il), each ot which is tlanged at its free ends. The, bolster ends are entered between tnesellanges, and the holsters' are rigidly secured to the flanges, the latter forni outer guides for the bolsters which bear against the columns of the side trames and assist in holding the frames in their assembled post-ion. The primary object however of the side bearing members l0, to prevent the car body from rocking, when in place en the trucks.

It is important in truck construction of the type herein shown, to distribute the load as nearly as possible, equally upon the several journals, and to do this it is necessary that the distance from the center line f the springs 6 carrying the bolsters 7, to' thc bearing ends 5a of each end member l and 2, be twice as long as the distance romcthe center line of the springs 6, to the center of axle box la. W ith such construction it will be seen, that, with the end arms 5 of the end members 1 and 2 so proportionedthe longer l arms which bear on the central member 3, l

will cach impart to the axle of the latter half as much of the load as will be borneby each end axle, ln other words, each end axle will bear two-thirds of the load falling on the side frame member to which it is connected, and each end member will transmit onethird ot' the load on it to the axle ot' the center member,

The end members l and 2 are free to turn or rock on the end journals, and the central member i is l'ree to rock on the central journals, and the connection between the end members and center member is such, that, each follows the movements of the other so Irhat the members of each side frame of the truck are free to 'move in a vertical plane within reasonable limits without throwing angy undue stresses on cach other, and without disturbing the proper relation of the parts or impair-ing the utility ot' the structure.

lt is evident that changes in the construction and relative arrangements of the several parts might be made without avoiding our invention and hence we would have it understood that we do not restrict ourselves to the particular construction and arrangement of parte shown and described, but,

Having fully described our invention what we claim as new and desire to secure by Letters-Patent, is:-

l. A. side frame for car trucks consisting of two end members and a center member,

each end member having an arm extending over tht` center member and bearing on the latter at the far side thereof.

A side frame for car trucks consisting of two end members and a center member, each end member having an arm extending over the center member and flexibly connected to the same at the far side thereof.

3. A sido frame for car trucks composed of, three flexibly connected equalizin members, each end member bearingr on t e central member at the far side of the latter et. A side frame for car trucks composed of three connected equalizing members, each end member being flexibly connected to the central member at the far side of the latter.

:3. n side frame for car trucks composed ot' three equalizing members, each end member having an arm ext-ending over the center member and flexibly connected to the samev at the far side thereof.

G. A car truck the side frames of which are each composed of three equalizing members, each member having a journal box and the two end members flexibly connected to the central member at the far side thereof.

7. A car truck the side frames of which are cach composed of three equalizing members, each having a journal box, the central member having a bearing at each end, and the two end members each having an arm the side frames of which are composed of end adapted to extend over the central member and cross members and monted on epring's and bear on the end liearing at the far side in the end members of the side frames. thereof. i 11. In a. car truck of the three axle type, 8. ln a car truck of the three axle type, the combination of the side fra.nites,each composed of two end members and ai central membereach end member having mexib'le and central equalizing members, each supported on an axle, the end members being .mpporled at the outer ends on their axles, the inner ends ot :said end members` pr0ject` ing over the center member to the far ends ot' a1nc and ,secured to the latter.

far side of the latter, an axle box inench bers, cross members resting on said sprins,

i and eide bearing members connecting t e i). A. side frame for car trucks composed ends of the cross members.

of three equalizing members, each haring an ,l In testimony whereof, we have signed this integral axle box, the inner ends of each end l specification in the presence of two subscrib# member paesing owithe central member ing witnesses.

and ilckibly connected to the fer end oi' -same. JOHN Q WHITRIDGE.

lll t). CLU ll'llfll( Of ll'llyllll'@ lXlC DYIl-l. u T the combination of the eide frames, eaclr L Witnesses:

composed of two end members and a central member cach end' member bearing on the F. Gr. BENNE'LT, central member at the far side of thc latter 1 P. W. Conner:n

member, springs in housings inthe end mem` connection with the central member'etthe Y 

